Example sentences of "[noun pl] have [verb] [to-vb] these " in BNC.

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1 Should the youth workers have tried to integrate these boys into ‘ the community ’ , or to isolate them from it ?
2 A role for apical Na + / H + exchange in maintaining the acid microenvironment is suggested by observations that the microenvironment pH is increased by luminal perfusion with amiloride or with Na + free media , although other studies have failed to confirm these findings .
3 Literary scholars have begun to pose these questions of various national literatures .
4 An extraordinarily high proportion of Milton scholars have chosen to disregard these truths about their subject , and have decided that because Milton was on the side of the regicides this made him a revolutionary and , because a revolutionary , therefore a man of the Left , perhaps even an agonized Maminst , or at least a sympathizer with the Diggers and Levellers of his own day .
5 As Strong points out , the treatment of drug abuse , alcoholism and mental illness is marked by serious differences of opinion and some doctors have struggled to de-medicalise these areas in the face of the hostility of their peers .
6 Historians have tended to ignore these important developments , which implied the growing need for a small supply of vessels specially built for war ( like heavy artillery , these could only be afforded by the crown ) , the facilities for their maintenance , and the growing appreciation that England 's commercial interests should be defended by ships built for that purpose .
7 Some theorists have attempted to counter these objections by reference to the ‘ social contract ’ , a theory which provides a general account of political obligation ( see especially Murphy , 1979 ) .
8 Since the early 1970s , when government first introduced internal efficiency reviews , successive administrations have refused to make these reports public .
9 So philosophers have struggled to reconcile these conflicting ideas , by finding ways in which all white Americans have profited from past discrimination against blacks , for example .
10 Over the years many obstacles have arisen to halt these dreams , yet still for many the ultimate objective remains .
11 Others have failed to replicate these findings ( Barbur , Ruddock , and Waterfield 1980 ; Blythe , Bromley , Kennard , and Ruddock 1986 ; Campion , Latto , and Smith 1983 ; Weiskrantz 1980 ) .
12 The students have to learn to confront these things without making overt moral judgements , without lessening their competence or self discipline and without being sick in the ambulance .
13 However , the various academic disciplines have tended to investigate these issues in their own separate ways , with the result that the analyses are typically confined to only particular aspects of the question and thereby remain largely inconclusive .
14 Although crowds have gathered to watch these beatings , the police are never able to find anybody who has seen anything .
15 In other experiments , Papi has shown that pigeons do not home accurately if their nostrils are blocked , or if their olfactory nerve is cut , or if they are experimentally distracted by a strong smell ; but other experimenters have failed to repeat these results and it has proved impossible to train pigeons to make the relevant olfactory distinctions ( which is a standard , and powerful , method of testing for sensory abilities — p. 43 .
16 The principal changes in the law by which the framers of these Acts have sought to effect these objects can be summarized as follows :
17 In the non-formal sector , however , some groups have tried to address these issues .
18 There is also general recognition that for many years prisons have failed to meet these objectives .
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